Morgan TH. Evolution and Genetics (1925). Princeton University Press.
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Pages where the terms "Historic" (textbooks, papers, people, recommendations) appear on this site, and sections within pages where this disclaimer appears, indicate that the content and scientific understanding are specific to the time of publication. This means that while some scientific descriptions are still accurate, the terminology and interpretation of the developmental mechanisms reflect the understanding at the time of original publication and those of the preceding periods, these terms, interpretations and recommendations may not reflect our current scientific understanding. (More? Embryology History | Historic Embryology Papers)
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Figures
Chapter 1
1 Different Kinds of Evolution
Fig. 1. Outline of horses of different geological periods
Fig. 2. Forefeet of horses
Fig. 3. Evolution of helmets
Chapter 3
3 Evidence for Organic Evolution
Fig. 4. Arm of chimpanzee and of man
Fig. 5. Legs of Five Mammals
Fig. 6. Male and female vinegar fly, Drosophila melanogaster
Fig. 7. Mutants of Drosophila melanogaster
Fig. 8. Fossil deer antlers
Fig. 9. Antlers of stag showing successive additions of brandies in successive years
Fig. 11. Diagram of chick
Fig. 12. Diagram of head of chick
Fig. 13. Human embryo, showing gill slits and aortic arches
Fig. 14. Side views of head of embryo shark showing gill slits
Fig. 15. Cleavage stages of four types of eggs
Fig. 16. Evolution of the horse
Chapter 5
5 Mendel's Two Laws of Heredity
Fig. 17. Inheritance of color in the four o'clock (Mirahilis jalapa)
Fig. 18. Diagram illustrating the transmission of the factors
Fig. 19. Cross between splashed white and black fowls
Fig. 20. Diagram to show the distribution of the genes for white and for black in the Andalusian cross
Fig. 21. Diagram to illustrate the inheritance of tall and short, edible peas
Fig. 22. Diagram illustrating the results of self-pollination
Fig. 23. Diagram of cross between a yellow and a green pea
Fig. 24. Diagram to show cross between a round-yellow and a green-wrinkled pea
Fig. 25. Diagram to show the independent segregation of the two pairs of factors, yellow-green and round-wrinkled
Fig. 26. Diagram to show the independent inheritance of two pairs of factors
Chapter 6
6 Chromosomes and Mendel’s Two Laws
Fig. 29. Diagram of a typical cell
Fig. 30. Diagram, slightly modified from Agar, to show a typical cell division (karyogenesis)
Fig. 31. Diagram to show stages in fertilization of an egg by a spermatozoon
Fig. 32. Diagram showing the segmentation of an egg into two, four, eight cells
Fig. 33. Section of egg of Calligrapha bigsbyana
Fig. 34. Diagram illustrating the two maturation divisions of the germ cells in the male
Fig. 35. Diagram illustrating the two maturation divisions of the egg
Fig. 36. Diagram to illustrate the distribution of the chromosomes in a cross between a red and a white four o'clock
Fig. 37. Diagram to illustrate the distribution of two pairs of chromosomes carrying two pairs of Mendelian factors
Chapter 7
7 Linkage Groups and the Chromosomes
Chapter 8
8 Sex-Linked Inheritance
Chapter 9
9 Crossing-over
Fig. 49. Diagram to illustrate crossing-over
Fig. 50. Cross of a female vinegar
Fig. 51. Conjugation of the chromosomes in Batracoceps
Fig. 52. Diagram to illustrate crossing-over of two conjugating threads
Fig. 53. Series of leaves of a tree arranged according to size
Chapter 10
10 Natural Selection and Evolution
Fig. 54. Beans put into cylinders according to size of beans
Fig. 55. A curve resulting from arrangement of beans according to size
Fig. 56. Curve of probability
Fig. 57. A short and a tall boy, each holding a stalk of corn
Chapter 11
11 Origin of Species by Natural Selection
Fig. 63. Evolution of elephant's trunk
Fig. 64. Evolution of elephant's trunk
Chapter 13
13 Human Inheritance
Fig. 65. Two Brachydactyl hands
Fig. 71. Two pedigrees for color blindness
Fig. 72. Diagram to illustrate the inheritance of eye colour
Fig. 73. Diagram to show the inheritance of night-blindness
Fig. 75. Diagram illustrating the sixteen classes of individuals when two members of the blood group AaBa mate
Fig. 76. Two pedigrees showing the inheritance of two blood groups
Historic Disclaimer - information about historic embryology pages
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Pages where the terms "Historic" (textbooks, papers, people, recommendations) appear on this site, and sections within pages where this disclaimer appears, indicate that the content and scientific understanding are specific to the time of publication. This means that while some scientific descriptions are still accurate, the terminology and interpretation of the developmental mechanisms reflect the understanding at the time of original publication and those of the preceding periods, these terms, interpretations and recommendations may not reflect our current scientific understanding. (More? Embryology History | Historic Embryology Papers)
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